Apparatus for cooling and absorbing sulfuric anhydrid.



No. 695,!80. Patented Mar. Il, |902.L

G.' C. STONE.

.APPARATUS FOB CUOLING AND ABSOHBING SULFURIC ANHYDBID.

(Application filed Aug. 23, 1900.)

( N o M o d el. 7

iran Stains armar rricn,

GEORGE C. STONE, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO TIIE NET JERSEYZINC COMPANY, A CORPORATION OF NEIV JERSEY.

APPARATUS FR COOLING AND ABSORBINGSULFURIC ANHYDRiD.

SPECIFICATION forming part of Letters Patent No. 695,180, dated March11, 1902.` Application led August 23, 1900. Serial No. 27,852. (Nomodel.)

T all whom, t may concern:

Be itknown thatl, GEORGE C. STONE, a citizen of the United States,residing at Jersey City, county of Hudson, State of New Jersey,

have invented certain new and useful Improvements in Coolers andAbsorbers for Sulfuric Anhydrid; and I do hereby declare the followingto be a full, clear, and exact'description of the invention, such aswill enable oth- 1o ers skilled in the art to which it appertains tomake and use the same.

My invention relates to certain. new and useful improvements in coolersand absorbers designed especially for use in the cooling and I 5absorbing of sulfuric anhydrid resulting from the union of sulfurousanhydrid and oxygen by means of the catalytic or contact process.

In the accompanying drawings, Figure l represents, partly in section andpartly in zo elevation, a form of apparatus embodying' my improvements.Fig. 2 represents a plan view thereof; and Figs. 3 and i represent,partly in elevation and partly in section and on a somewhat largerscale, alternative forms or modifications of the cooler-tubes,illustrating particularly means for damming the absorbing liquid on itspassage through the cooler.

Similar letters of reference indicate similar parts throughout theseveral views.A

3o Referring to the drawings, a indicates a number of'pipe-sectionsinclined with respect to eachother and joined by U-shaped intermediateconnections b. At their upper ends the series of pipes a are connectedby a inani- 3 5 fold c, having an exit-nipple d for theeXit of any gasesnot absorbed in the cooling-pipes. A pipe e for the admission of acurrent of water or weak acid enters the manifold c, said liquid passingdownwardly throughithe 4o system of pipes A. At the lower ends of theseries of pipes a is located a second manifold f, having a nipple h forthe inlet of the gases to be cooled and absorbed in the apparatus. Apipe 'i serves to carry off the liquid,with its 4,5 absorbed volume ofsulfuric anhydrid, as it drains downwardly through the pipe system. Inorder to detain the absorbing liquid for a greater length of time incontact with the gas, I preferably provide each pipe-section 5o with adam extending transversely across its lower end. As illustrated. in Fig.3, this dam may consist of a partition 7t,which may con veniently becast integral with the pipe, or,

as illustrated in Fig. 4, the dam may consist of a disk Z, held betweenadj acentpipe-iianges 5 5 and having an aperture m for the passage 0fthe absorbing liquid.

The operation of the apparatus will be apparent. The gases containingsulfuric anhy drid from the contact vessels or retorts enter 6c themanifold f at the nipple h, and on their passage upward through theseries of inclined pipes a pass over a counter-current of water, weakacid, or other absorbing liquid. The temperature of the pipes ct ismaintained at the desired low degree by immersing in a tank A,containing a cooling liquid, or by spraying the pipes with a coolingliquid, orlotherwise, as may be preferred. On its passage through theseries of pipes the sulfuric anhydrid is 7o therefore cooled and isabsorbed by the liquid passing through the pipes,any uncondensable oruncondensed gases iinally passing out through the exit-nipple d'.

Having thus described my invention,| what I claim is-' l. A cooler andabsorber for sulfuric anhydrid, comprising a system of cooling-pipesconsisting of lines of oppositeiy-extending inclinedpipingv formed byreturn-bends :into a 8o continuous closed conduit, said system having agas-inlet and a liquid-outlet at one end, and a gas `outlet and aliquid-inlet at the other, said pipes having dams anterior to the bends.

2. A cooler and absprber for sulfuric anhydrid, vcomprising a systemofcooling-pipes consisting of lines of oppositely-extending piping formedby return-bends into a continuous closed conduit, said system having a9o gas-inlet and a liquid-outlet at one end, and a gas-outlet and aliquid-inlet at the other, said pipes also having dams at thereturnbends.

3. A cooler and absorber for sulfuric anhydrid, comprising a system ofcooling-pipes, having a gas inlet and outlet, an inlet for tho supply ofabsorbing liquid to the system, and an outlet for the recovery of theliquid after absorption, and dams in the cooling-pipes to roocorrespondingly detain the liquid therein, said dams extendingtransversely at tho lower ends of the pipe-sections, and consisting of lrent of gas therethrough, said pipes being disks inserted between thepipesections and provided with transverse dams, located at the havingapertures of less size than the diambends between adjacent pipes;substantially eter of the pipe; substantially as described. asdescribed. I5

4. A cooler and absorber for sulfuric anhy- In testimony whereof I affixmy signature drid, comprising a system of oppositely-exin presence oftwo Witnesses.

tending pipes formed by `return-bends into a GEORGE C STONE continuousseries of closed piping, means for externally cooling the Walls of thepipes, and Witnesses:

means for introducing a current of absorbing H. G. CLOPPER, liquid intothe pipes iu opposition to the curl C. WV. SEXTON.

